If you are going into a lease you will need to employ a solicitor to do all the relevant searches etc..... He will also check the agreement to ensure you are not signing for things you shouldn't i.e. repairs to the exterior!
Also, take photo's or every wall, ceiling, exit, entrance, roof, that way should when you move out and the landlord tries his luck you can prove exactly what condition the unit was in when you took occupation.
Best of luck,
Trev